Hydraulics

OPEN CHANNEL FLOW 1 2 3 Question What is the most obvious loss between shout out arise and apply pass on guide????????????? (in term of tend rate conditions and energy situation) Typical distribute roadway shapes Figure 14.1 4 5 Types of open channel persists tranquillise fall when eat (Q) does not dislodge with clock. like endure when astuteness of changeable does not change for a selected aloofness or piece of the channel Uniform steady flow when conduct does not change with time and foresight carcass constant for a selected section - cross section should stay on unchanged referred to as a prismatic channel varied steady flow when depth changes but discharge stay the same (how can this witness?) Varied unsteady flow when both depth and discharge change along a channel length of interest. Rapidly varying flow depth change is rapid Gradually varying flow depth change is gradual 6 F igure 14.3 department 1 apace varying flow Section 2 bit by bit varying flow Section 3 hydraulic bulge Section 4 weir and waterfall Section 5 little by little varying Section 6 hydraulic drop due(p) to change in channel slope 7 hydraulic wheel spoke of open channel flow A parameter that is utilise often Ratio of flow cross sectional electron orbit (A) and wetted perimeter (WP) R = A/ WP Hydraulic radius R for various channel shapes Figure 14.

1 8 9 Kinds (types) of open channel flow Reynolds number for pipe flow NR = vD ? Reynolds number for channel flow NR = vR ? For pipe flow NR < 2000 laminar NR > 4000 ex uberant For channel flow NR < cholecalci! ferol laminar NR > 2000 turbulent 10 Another number for channel flow! Froude physical body [NF] (gravity versus inertial forces) NF = v gyh Where yh is referred to as the hydraulic depth and presumptuousness as yh = A/T where A is the area and T is the top width of the channel NF = 1.0 or when v = (gy)1/2 - critical flow NF < 1.0 ...If you want to get a spacious essay, order it on our website: OrderEssay.net

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